Shower bath and pan



Jan. 25, 1938.

' A. CHENEY SHOWER BATH AND PAN Filed Aug. 27, 1936 Aka-4a r% Patented Jan. 25, 1938 UNITED STATES PATENT OFFICE 12 Claims.

The present invention relatesto improvements in pans adapted to be embedded in the masonry floor of shower baths to provide a waterproof curse therefor; and the invention aims generally to improve the construction of such pans as well as the construction of the shower bath floor.

Heretofore in the construction of a masonry floor for a shower bath stall, it has been customary to lay a sheet of lead on the masonry floor to prevent the seepage of water therethrough. It is very difiicult to lay' such a lead sheet free from depressions or pockets which collect water seeping through the floor, to the end that the lead sheet soon disintegrates from a chemical action between the lead and the concrete masonry. Furthermore, the lead sheet is so soft and pliable that it must be laid carefully and. then protected against deformation during the laying ofthe-masonry floor, and great difficulty has been 0 :experienced due to workmen walking on the sheet before the masonryfloor is laid. Furthermore the mortar of the masonry floor does not in any way adhere tolead sheet and when it expands and contracts due to sudden changes from hot to cold water, cracking and loosening of the-floor often results. 7

My invention aimsto overcome the above and other disadvantages by providing a pan fabricated from a metal, such as copper, which will not rust or corrode, which will be mechanically keyed to the mansonry floor and provide an impervious Waterproof course for draining any seepage to the floor drain.

My invention will be better understood by refs'zerence to the accompanying drawing illustrative of one preferred construction embodying the invention and in which Fig. 1 is a central sectional view of a floor of a shower bath stall with my improved shower pan installed therein;

"Fig. 2 is a fragmental perspective view of my improved shower pan; and

Fig. 3 is an enlarged detail sectional view through the pan on the line 33 inFig; 2.

In the illustrated embodiment of the invention, the shower bath may be constructed upon a masonryfoundation l0, over which is laid a course of building blocks H, as for exampleterra cotta blocks, commonly used by the building trades;

The size-of the stall may be defined by vertical walls l2, inside of which is the usual Wainscot l3, whichmay beof marble, glass, the or other suitable'material- A floor drain It may be embedplace. 1

A shower pan l5, which advantageously is of sheet copper, is of any desired shape to conform to the shape of the stall and is providedwith-upstanding side flanges l6 and end flanges Ilia. The pan is laid over the course of blocks H and 5 isrembedded in a layer ofv mortar l1 above and below the pan. The upstanding flanges l6 and Mia of the pan extend. upwardly. between the walls l2 and Wainscot 13 sothat there will be no chance. of leakage at theedges of the pan, and. 10 these flanges l6 may belbonded to the walls bya. layer of mortar. (not shown). Theusual tile; or other suitable finish l8 maybe provided. for the upper surface of mortar layer, or the upper sur-- face of the mortarlayer' I1 may be trowelled l5 smooth as desired.

The pan I5. is advantageously formed with a plurality of stiffening, ribs IS in its surface to reinforce and stiifen the body of'the paniand preferably the sides of these ribsare inclinedor undercut as at 20 so as to securely bondwiththe mortar l1. As herein illustrated the ribs 19 are. shown asv dovetail ribs extending transversely of the pan body, but it is to be understood thatthey may be of other cross-section and may be other- 25 wise arranged in the body of the pan.

The bodyof the pan l5 between the ribs l9 constitutes water drainage grooves or'channels 2| and preferably these channelsextend from the marginal side flanges l6 inwardly toward the. center of the pan l5 so as to drain any water that may seep through the course. I! centrally of the pan and towardv the drain. M. In the embodiment of the invention illustrated wherein the ribs l9 are disposed transversely of the pan I5, the said ribsv may be flattened centrally of the pan to provide a relatively widedrainagechannel 22 communicating with all of the grooves 21.

When installing the pan, the workman hasmerely-to cut an opening. as-at 23 in the body of the pan to receive the drain l4 and to secure the pan around. said opening tightly to the drain M as. by clamping. A thin layer of mortar hav ing previously been. spread over the: course ll of blocks, the pan is ready to. be pressed into place. When so pressed into place, the lower layer of mortar I1 fills the grooves formed on the under side of the ribs l9 and whenthe mortar hardens the pan is securely bonded to. the I course of blocks. i 50 A layer of mortar I1 is then spread over the. body of the pan and then/fills the spaces 21' of thepan and completely embeds the body 45. When this'layer ofmortar' hardens,1the pan is adequately secured tothe foundation as a whole by reason of the mechanical bond aflorded by the ribs and grooves.

As is well known, all masonry construction is porous to some extent and permits the seepage of water therethrough, and in the case of masonry employing the usual building mortar, the seepage is relatively rapid. Shower bath stalls constructed in accordance with my invention are adequately protected against seepage through the room below by reason of the impervious noncorrodible pan which collects all seepage water and drains it to the drain l4 through small holes in the sides of said drain. Furthermore the construction of the pan which provides alternate ribs or grooves, produces considerable flexibilitybetween the sides of the ribs so as to accommodate expansion and contraction of the masonry covering mechanically bonded to the pan, due to sudden changes from hot to cold water, without liability of cracking or loosening of the masonry covering.

It is advantageous that the upstanding flanges l6 and Ilia of the pan be ribbed so that they may be mechanically bonded to the walls l2 or Wainscot l3 or both. In the illustrated form of the invention, wherein the ribs l9 extend transversely of the body of the pan, the side flanges it may be integral with the body of the pan, but the end flanges advantageously are formed of separate ribbed sheets secured to the end edges of the pan bottom and side flanges I6, as by soldering. Advantageously, the ribs adjacent the lower edges of the end flanges 3a are flattened as at 24 so that they may be soldered to a plain edge portion 25 of the pan bottom. Preferably the ends of the end flanges Ilia extend around the corner adjacent the ends of the side flanges and are secured thereto, so as to reinforce and strengthen the corners of the pan.

It will be apparent to those skilled in the art that the invention is not restricted to the particular shape or arrangement of the ribs or other details of the specific construction shown which is intended only as illustrative of the invention.

I claim:

1. A shower bath stall floor, a foundation, a course of masonry above the foundation, and an impervious metal shower pan embedded in and mechanically keyed to said masonry course, a drain outlet within the marginal edges of the pan and means for draining water of infiltration from all areas of said pan to said drain outlet.

2. A shower bath stall comprising a foundation and vertical walls, a layer of cement over said foundation, an impervious metal shower pan embedded in and mechanically bonded to said layer of cement and having peripheral integral upstanding'flanges fitting said walls, and a wainscot fitted to the walls and in part overlying the flanges'of said pan.

3. A shower pan adapted to be embedded in a cementitious floor of a shower bath stall having a floor drain, comprising an impervious sheet metal body conforming to the shape of the stall and fitting the floor drain, said pan being formed with a plurality of alternate ribs and grooves metal body conforming to the shape of the stall Y and fitting the floor drain,' the body of said pan being formed with a series of alternate transverse ribs and grooves adapted to be embedded in the mortar, said grooves being intercommunieating in the region of the center of the pan to permit water of infiltration collected by said. grooves to be drained to the floor drain.

5. A shower pan adapted to be embedded in a cementitious floor of a shower bath stall having a floor drain comprising an impervious sheet metal body conforming to the shape of the stall and fitting the floor drain, the body of said pan being formed with a series of alternate transverse ribs and grooves adapted to be embedded in the mortar, said ribs being flattened along at least one section of the pan to provide a drainage valley communicating with all of said grooves whereby water of infiltration collected in said grooves may be drained to the floor drain.

6. A shower pan adapted to be embedded in a. cementitious floor of a shower bath stall which is provided with a floor drain, comprising a sheet metal pan conforming in shape to the stall and formed with peripheral upstanding flanges, the body of said sheet being formed with transversely arranged alternate dovetail ribs and grooves adapted to be bonded to said cementitious floor, and means establishing drainage communication from all of said grooves to the floor drain. I

7. A shower pan adapted to be embedded in a cementitious floor of a shower bath stall which is provided with a floor drain, comprising a sheet metal pan conforming in shape to the stall and formed with peripheral upstanding flanges, the

body of said sheet and flanges being formed with transversely arranged alternate dovetail ribs and grooves adapted to be bonded to said cementitious floor, and means establishing drainage communication from all said grooves to thefioor drain.

8. A shower pan for shower bath stalls comprising an impervious sheet metal body of substantial area and provided with a drainage outlet Within the marginal edges thereof, said body being provided on the upper surface with means for mechanically bonding the sheet to a layer of cementitious material, and for draining water from all portions of its area toward said drainage outlet.

9. A shower pan for shower bath stalls comprising an impervious sheet metal body of substantial area provided with a drainage outlet within the marginal edges thereof, said body being provided on the upper surface with expansible means for mechanically bonding the sheet to a layer of cementitious material whereby the bonding means of the metal pan body may expand and contractto accommodate expansion and contraction of the cementitious layer, said expansible bonding means being so constructed and arranged as to permit drainage of water from all portions of said pan toward said drainage outlet.

,10. A shower pan for shower bath stalls comprising an impervious sheet metal body of substantial area provided with a drainage outlet within the marginal edges thereof, said body being deformed to provide means adapted to eifect a mechanical bond with a layer of cementitious material and to permit drainage of water from all portions of its area, toward said drainage outlet. y H

wl1. Ashower pan for shower bath stalls comprising an. impervious sheet metal body of substantial area .providedwitha drainage. outlet ing deformed to provide means adapted to effect a mechanical bond with a layer of cementitious material on opposite sides thereof and to permit draining of water from all portions of its area toward said drainage outlet.

12. A shower pan for shower bath stalls comprising an impervious sheet metal pan formed with a bottom and upstanding side walls, said bottom being of substantial area and provided with a drainage outlet within the marginal edges thereof, said bottom and side walls being provided with means for mechanically bonding the pan to layers of cementitious material and to permit draining of water from all portions of its area toward said drainage outlet.

ALLAN CHENEY. 

